When you want to publicise your papers, presentations, theses, book chapters and research data on your personal or departmental website, institutional repository or you wish to support open access, you will need to find out what the publisher of that paper, presentation or research data allows. Publishers, funders and your institution have various copyright possibilities and restrictions. Some allow you to archive only a pre-print version, a pre-refereed version, and some allow archiving of published materials.
Refer to NUS copyright guide and Sherpa-ROMEO on how copyright affects your usage of your published materials.
In the homepage, you can search for copyright privileges set up by a publisher or that apply to a journal
In this example, the list of privileges state that an author can archive their pre-print on a pre-print server such as arXiv, their personal website, an institutional repository such as ScholarBank, a subject repository such as HEP Data or a centralised repository such as ZENODO.